streams: just use modulestest to get setTimeout and co.

[mstoykov]

What?

Use modulesTest insead of k6/timers module

Why?

This breaks in some cases and more importantly isn't really necessary

Checklist

• I have performed a self-review of my code.
• I have added tests for my changes.
• I have run linter locally (make lint) and all checks pass.
• I have run tests locally (make tests) and all tests pass.
• I have commented on my code, particularly in hard-to-understand areas.

Related PR(s)/Issue(s)

[joanlopez]

Nice, thanks @mstoykov! I wasn't aware of this when I worked on streams, so I'm learning on the way, thanks for sharing! :)

[mstoykov]

There is a good chance this was added after the streams work.

[joanlopez]

There is a good chance this was added after the streams work.

Anyway, the same applies, thanks for improving what exists, and sharing it (if I have seen this before, I completely forgot, I hope I'll remind it next time I need something similar).

💟